Feed-water regulator.



L. B. FULTON. FEED WATER REGULATOR. APPLIGATION FILED APR. 2a, 1913.

1,123,86% Patented Jan.5,1915.

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LOUIS B. FULTON, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOIB, TO THE CHAPLIN-FULTON MANUFACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A COR-PORATION OF PENNSYLVANIA.

FEED-WATER REGULATOR.

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Application filed April 28, 1913.

To all whom it may concern:

Be it known that I, LOUIS B. FULTON, of Pittsburgh, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Feed- Water Regulators; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

The object of this invention is to provide a simple and comparativelyinexpensive feed-water regulator for boilers having improved means forallowing a relatively small quantity of water to pass to a boilerbetween the intervals at which the water is fed under full head, therebyprolonging the intervening periods between such intervals.

In the accompanying drawing, the figure is a vertical sectional view.

Referring to the drawing, 1 designates a valve casing which is designedto be located in the feed-line, the main valve 2 being automaticallycontrolled by the water levels in the boiler. The stem of valve 2 isshown connected to a piston 3 which is slidable in a cylinder of thevalve casing and designed to be forced downwardly by boiler pressureacting thereon, such boiler pressure upon being admitted to the pistoncylinder effecting the seating of the valve, as against the tension ofits unseating spring 4, when the predetermined water level has beenobtained. It is not necessary to show or describe any particular meansfor automatically controlling valve 2, since various means may beemployed for this purpose, and as an instance reference is made to myPatent No. 662,488, issued November 27, 1900.

5 designates an auxiliary valve which is shown as located in axialalinement with the main valve 2, but it is of considerably lesscross-sectional area'than the latter, and is designed to control arelatively small port which is opposite the port controlled by the mainvalve. This auxiliary valve 5 is normally held to its seat by a spring6, but is capable of being seated only when the main valve is unseated,and the seating of the latter is intended to effect the unseating of theauxiliary valve. For this purpose the Specification of Letters Patent.

Patented Jan. 5, 1915.

Serial No. 764,162.

main valve is provided with means for automatically unseating theauxiliary valve when the main valve is seated, such means being shown asconsisting of a plug or extension 7 carried by the main valve.

In practice, the main valve is unseated only when the water in theboiler has lowered to a predetermined level, and when the desired levelhas been restored such valve will be automatically seated by boilerpressure acting on its piston. When the main valve is unseated theauxiliary valve is seated by the spring 6, but when the desired supplyof water has been obtained and the main valve is reseated the auxiliaryvalve will be unseated, thereby allowing a continuous flow of water in arelatively small proportion while the main valve is seated. In this wayI am enabled to lessen the intervals when a full head of water issupplied to a boiler. This effects economies in operation. The meansshown and described for accomplishing this purpose are exceedinglysimple and inexpensive and not liable to readily get out of order.

I claim as my invention:

In a feed water regulator, a casing having a cylinder and two ports inaxial aline ment with each other, a main valve controlling one of saidports, a piston connected to said main valve and fitted in saidcylinder, an auxiliary valve controlling the other of said ports, themain valve being seated by pressure acting against said piston, meansacting in the opposite direction against said piston for unseating saidmain valve, a spring for normally holding the auxiliary valve to itsseat, and a plug between the main valve and the auxiliary valve foreffecting the unseating of the latter when the main valve is seated andallowing it to seat under the action of its spring when the main valveis unseated.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

LOUIS B. FULTON.

Witnesses:

IVM. O. CHAPLIN, G. HOWARD STEWART.

t'lopiee of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. 0."

